Rouleau turner



Filed April 15, 1947 Oct. 2, 1951 M. TEMPLE I 2,570,012

ROULEAU TURNER 3 Sheets-Sheet' 1 A ttorney Oct. 2, 1951 M. TEMPLE 2,570,012

ROULEAU 'ruausn Filed April 15, 1947 3 Sheets-Sheet 2 In ve ntor Attorney Oct. 2, 1951 M. TEMPLE 2,570,012 ROuLEAu TURNER Filed April 15, 1947 Invenlor 3 Sheets-Sheet 5 Patentecl Dot. 2, 1 951 UNITED STATES. PATENT OFFICE Application April 15, 1947, Serial No. 741,583 In Great Britain May 16, 1946 2 Claims. (Cl. 112-63) This invention relates to rouleau turners which comprises a device designed for attachment to the lower end of the presser bar in place of the presser foot, for the production of tubular trimming from strips of fabric with the stitched portion inturned to conceal the stitching, said invention being an improvement in or modification of the invention described and claimed in the specification to my prior British Patent No. 520,634, and it has for its object to improve and simplify certain detail parts of the device and to provide means for simplifying the threading of the fabric strips through the folder and back through the return tube.

According to the present invention the inclined slot which guides the upper edge of the fabric strip onto the lower edge of said strip, is given a gradual slope whereb the fabric is prevented from twisting as it meets the lower edge of the strip, which strip at this point slightly forward of the needle aperture, is wrapped around the tube, and in order to give more room for the passage of the lower edge of the fabric the tube, at a point slightly forward of the slope, is provided with a double bend so as to raise said tube above the inner surface of the folder. For enabling the fabric strip to be easily threaded through the folder a longitudinally disposed slot is provided. along the side of the tube for the passage of a threading hook.

In the accompanying drawings which illustrate the invention:

Figure 1 is a side elevation of the assembled device.

Figure 2 is a plan view thereof.

Figure 3 is an end view thereof as viewed from the front.

Figure 4 is an end view thereof as viewed from the rear.

Figure 5 is a perspective view from below of the several parts of the device shown separately.

Figure 6 is a longitudinal section on line VIVI of Figure 2.

Figure 7 is a longitudinal section on line VII-VII of Figure 2.

Figure 8 is a longitudinal section on line VTII-VIII of Figure 2.

Figure 9 is a transverse section on line IX--IX Figure 1.

Figure 10 is a transverse section on line XX of Figure 1.

Figure 11 is a plan view of the co-acting inner faces of the upper and lower plates of the device.

Figure 12 is a perspective view of the assembled d v c an Figure 13 is a view of the threading hook.

The device comprises a folder scroll I, attached to a lower plate 2 to which is soldered at 2 a tube 3 (Figures 5 and 9), and an upper plate 4 to which is pivotally attached a part 5 by means of which the device is attached to the presser bar of a sewing machine in place of the ordinary foot.

The folder scroll l at its extreme forward end is of a flattened tubular form as shown more clearly in Figures 3, 5 and 12, the rear part of the scroll I is formed as a flat plate I adapted to seat in a recessed part 2 provided in the under face of the lower plate 2 to which it is secured by screws 6 or in any other convenient manner. The plate l is provided with a longitudinally disposed slot l the length of said slot being only just sufficient to permit the fabric strip to pass from the folder scroll onto the lower surface of said tube 3.

The lower part 2 is provided with a tube 3, which as shown in Figures 5 and 6, is formed with a bend it so as to raise said tube, forwardly of the inclined surface I located approximately in the centre of the part 2 (Figures '7 and 11). The surface I is arranged to coact with a correspondingly inclined surface 8 provided on the forward end of the pressure bar 4* furnished on the inner surface of the upper plate 4.

The tube 3 is further provided with a bend at 3 to raise said tube slightly above the lower inner surface of the folder scroll l in order to provide a channel or passage 9* giving sufiicient clearance between the inner surface of the folder I and the tube 3 for the passage of the lower edge of the fabric strip I2.

The part 4 is further provided on its inner surface with a groove 4 and approximately in the middle of said groove with a depression 4 to receive the bend 3 in the tube 3 above referred to. The coacting surfaces of the two plates 2 and 4 when the parts are assembled are disposed so as to provide a channel or passage 9 (Figures 8 and 9) for the passage of the upper edge of the fabric strip l2.

For the purpose of enabling the strip of fabric 12 to be drawn into the folder scroll l, the upper plate 4 is provided with a longitudinally disposed slot 10 so arranged that it lies parallel with the tube 3. The slot is arranged to receive the threading hook ll shown in Figure 13.

Assuming that the parts are in the assembled position as shown in Figures 1, 2 and 12, and that it is desired to insert one end of a strip of fabric l2 to convert same into tubular form, the threading hook I l is passed into the slot ID and through the flattened tubular part of the folder. The hook II is caused to engage the end of the strip which may now be drawn into the folder beneath and around the forward end of the tube 3 through thepassage 9 and out at the rear end. The construction and arrangement of the part is such that the strip I2 is wrapped around the tube 3, the under edge passes through the passage 9 formed between the underside of said tube and the plate l which lies in the same plane as the pressure bar 4*. The upper edge of the fabric passes through the passage 9 formed between the inner surface of the part 4 and the upper surface of the part 2 adjacent the'tube 3 and down the inclined passage formed by the surfaces 1 and 8 and under the pressure bar 4* by means of which said upper edge is pressed into contact with the under edge of said strip and against the feed dog of the machine. The under edge of the strip I2 is also pressed by the tube 3 against the feed dog on the opposite side of the needle. The threading hook H is now threaded into the forward end of the tube 3 and the end of the strip of material I2 is drawn into and through the back end of the tube.

Assuming the device to be attached to the lower end-of the presser bar of themachine by the part 5, the machine is started, the needle passes through the hole 13 and the two edges of the fabric strip are stitched together, the feed dog :1

of the machine feeds the stitched strip of fabric rearwardly. As the stitching proceeds the strip ['2 is drawn forwardly by hand through the tube 3 by which the tubular strip is turned inside out to conceal the rawedges of the strip and stitch- 111%.

it will be understood that the size of the device and of the passage 9 and tube 3 may be varied according to thethick-ness of the material and the size of the required tube which may be filledwith the material, or, an independent filler.

What I claim is:

1. A rouleau device comprising an upper plate, a bracket pivotally attached to the upper plate for attaching the device to the presser bar of a sewing machine, a pressure bar depending longitudinally from said upper plate and adapted to coact with the the feed dog of the sewing machine, a longitudinal channel formed in said pressure bar, a lower plate secured to said upper plate laterally of the pressure bar, an inturning tube secured to the lower plate and disposed in said longitudinal channel, a folder scroll secured to said lower plate for partially folding a strip of material fed thereto around said inturning tube,

said folder scroll being of tapered channel form with its narrow end disposed around said inturning tube, means for spacing said tube from the inner surface of the folder scroll for the passage of the strip of material between the parts, cooperating inclined surfaces on the lower plate and the pressure bar for bringing together the edges of the strip of material, the said pressure bar 7 being provided with a needle hole situated intermediate the ends of the pressure bar forming a passage for the sewing machine needle, and means for the passage of a hook serving to thread the strip of material through the folder scroll and into the device and, after the edges of the, strip have been stitched together, back again through the inturning tube to produce a tubular strip having the stitching on the inside.

2. A rouleau device comprising an upper plate, a bracket pivotally attached to the upper plate for attaching the device to the presser bar of a sewing machine, a pressure bar depending longitudinally from said upper plate and adapted to coact with the feed dog of the sewing machine, a longitudinal channel formed in said pressure bar, a lower plate secured to said upper plate laterally of the pressure bar, an inturning tube secured to the lower plate and disposed in said longitudinal channel, a folder scroll smured to said lower plate for partially folding a strip of material fed thereto around said inturning tube, said folder scroll being of tapered channel form with its narrow end disposed around said inturning tube, said tube being provided with a double bend so as to raise said tube above the inner surface of the folder scroll for the passage of the strip of material between the parts, co-operating inclined surfaces on the lower plate and the pressure bar for bringing together the edges of the strip of material, the said pressure bar being provided with a needle hole situated intermediate the ends of the pressure bar forming a passage for the sewing machine needle, and means for the passage of a hook serving to thread the strip of material through the folder scroll and into the device and, after the edges of the strip have been stitched together, back again through the inturning tube to produce a tubular strip having the stitching on the inside. V

MERVYN TEMPLE.

REFERENCES CITED UNITED STATES PATENTS Name Date Seaman Sept. 23, 1941 Number 

